EUVD-2026-36504

Mattermost versions 11.6.x = 11.6.1, 11.5.x = 11.5.4, 10.11.x = 10.11.15, 10.11.x = 10.11.16 Mattermost fails to sanitize FileInfo.Name received from federated peers during shared channel file sync, which allows an attacker who controls a federated server to write files to arbitrary locations...

PT-2026-44032

Name of the Vulnerable Software and Affected Versions Mattermost Plugins versions prior to 1.1.6 Description Insufficient sanitization of filenames received from federated peers when constructing export destination paths allows a remote administrator of a federated server to perform a path...